题干

一个三角形的底扩大3倍,高扩大2倍,则这个三角形的面积扩大(  )倍.

A:3

B:5

C:6

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答案(点此获取答案解析)

C

同类题1

阅读理解

    American Sign Language, often called ASL, is used by most people with hearing problems in the United States and Canada.

    Besides ASL, there are more than fifty sign languages used throughout the world today, including Mayan Sign, British Sign, Israeli Sign, and Chinese Sign. Like spoken languages, sign languages are different from each other. But all sign languages are based on sight instead of sounds.

    Sign languages have several main visual (视觉) parts that work together to express meaning. The first part is the shape made by the hands. Movement is also important. Moving the body or organs (器官) like hands affects the meaning of the shape. The place where the sign is made and the direction the hands face are crucial as well. Other visual clues (线索), such as the expression on a person's face, can sometimes change a sign's meaning. For example, a change in a smile can show whether a signer is happy, very happy, or overjoyed. Raising the eyebrows can mark a question.


    In sign languages, the visual parts are combined (结合) in different ways to create signs.

These signs stand for things, actions, feelings, and ideas. ASL has about 4,000 different signs. Like spoken  languages,  sign  languages  cannot  be  translated  word-for-word.  

    For English word may be represented by a series of signs in ASL. Or several English words may be

represented by a single ASL sign. Unlike spoken languages, the signs are organized according to sign-language grammar and the most important word or idea is signed first.

    In ASL, the letter signs are made with one hand. Signers would rarely, if ever, spell out all the words they are signing. That would be as awkward and slow as speakers spelling each spoken word. However, American Sign Language does not have signs for proper names, so signers may use the alphabet to spell these. Also, sign languages often borrow words from other languages. They may spell words using finger spelling which is done with a set of hand shapes that stand for letters of the alphabet.

    Sign languages  develop  naturally  when  people  with  shared  culture  and  needs  want  to communicate with each other. Signers are closely linked to each other, perhaps more than to speaking people in their own communities. Signers share points of view, values, needs, and problems,as well as languages.

同类题4

完形填空

                                                         How an undergraduate raised her sister and mother alone

    For many undergraduates, finding a job or getting1education is a trouble at their age. However, a Henan girl faced more urgent and bigger issues when it came to job or further studies, because she had to help her family2before graduating from college.

    Liu Jiaojiao, 26, was born in a village of Luyi county in Zhoukou city, Central China's Henan province. After3in 2014, she chose to be a teacher in a middle school in her hometown, so she could4her paralyzed mother.

    Up to now,5the only bread-earner in the family, Liu has taken care of her mother who6from cerebral infarction(脑梗塞) for five years. She has remained7and strong to overcome the challenges of life,8complain about her fate.

    In 2010, after finishing the college entrance examination, Liu was told that her father was9with esophageal cancer(食道癌) six months ago. Then her father was dead about one year later.

    "My grandmother was over 70 years old, and my sister was still in high school at that time, which left my mother and me to10the family," Liu said.

    Hou Panzhi, 50, Liu's mother, has been suffering from mental illness for a long time. Liu said: "She could say something to encourage me at the beginning; I did not feel alone at that time."

    In order to11money, she spent less than 10 yuan ($1.5) every day. Besides doing some part-time jobs at the college, she also worked in other southern cities such as Guangzhou and Hangzhou in the summer and winter12.

    However, Huo's13got worse in 2012; she suffered with cerebral infarction and became paralyzed. Liu then rented a house for her mother to take care of her while going to school nearby.

    The teachers organized a donation and formed a volunteer team to help her. Liu also14a scholarship at school.

    "I told myself that I am not15, there are many people around me. I had a strong16to support my family," Liu said. However, it was hard. She added: The most 17time was when I was sick at school."

    Now, she works hard to strike a balance to take care of her mother and to teach students.

    "I would like to tell my mother what happened in my math class after school, I feel she could hear it sometimes," she said with a smile. "I also buy an electro-tricycle two month ago, taking my mother to go outside."

    She often18the photos with her mother on her WeChat, saying that wherever she is with her mom is home.

    "Life is much better than before, I have a job, and my sister has grown up, we have become stronger and most confident than before," she added.

    In July, Liu was nominated as a(an)19of the "National Moral Models" this year, which encourages and guides the young people to cherish the time with parents and have a sense of20.